Manufacturing method of organic electroluminescent device, organic electroluminescent device, and electronic apparatus

Abstract

A method manufactures an organic EL device by forming cathodes by a liquid phase process depositing a dispersion liquid containing ultra-fine ytterbium (Yb) particles using an inkjet method, followed by drying.

1. A method of manufacturing an organic electroluminescent device, comprising:
 forming a plurality of anodes over a substrate; 
 forming a plurality of organic electroluminescent films over the plurality of anodes; and 
 forming a plurality of first cathodes over the plurality of organic electroluminescent films by applying a plurality of droplets of dispersion, each of the droplets including a plurality of dispersed particles, each of the plurality of dispersed particles having a particle diameter of 1 to 100 nm, the dispersed particles including ytterbium (Yb). 
 
     
     
       2. The method of manufacturing an organic electroluminescent device according to  claim 1 , further comprising:
 forming a second cathode on the plurality of first cathodes, the second cathode including a material that is not included in the plurality of first cathodes. 
 
     
     
       3. The method of manufacturing an organic electroluminescent device according to  claim 2 , further comprising:
 forming a bank over the substrate before the forming of the plurality of organic semiconductor layers, the bank separating the plurality of the anodes from each other, the plurality of organic semiconductor layers not overlapping a top of the bank, the plurality of first cathodes not overlapping the top of the bank, the second cathode overlapping at least a part of the top of the bank. 
 
     
     
       4. The method of manufacturing an organic electroluminescent device according to  claim 2 , the second cathode being formed by applying a liquid material. 
     
     
       5. A method of manufacturing an electro apparatus including the method of manufacturing an organic electroluminescent device according to  claim 1 .